<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>flex_test</title>
    <style>
        .div_n{
            width: 100%;
            display: flex;
        }
        .div_1{
            width: 100px;
            height: 300px;
            background-color: black;
        }
        .div_2{
            height: 300px;
            background-color: rgba(162, 0, 255, 0.411);
            margin: 0 10px;
            flex: 1;
        }
        .div_2 span{
            width: 100%;
            /* word-wrap: break-word; */
            word-break: break-all;
        }
        .div_3{
            width: 100px;
            height: 300px;
            background-color: black;
        }
    </style>
</head>
<body>
    <div class="div_n">
        <div class="div_1"></div>
        <div class="div_2"><span>asdaffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff暗示呵呵水水水水水水</span></div>
        <div class="div_3"></div>
    </div>
</body>
</html>